Can contribute to employment
When an ingredient in dog food says it can "contribute to activity", it usually means that the ingredient is designed to provide your dog with not only nutrition, but also some challenge or activity while eating. Such ingredients can take a variety of forms and can be aimed at enhancing your dog's cognitive or physical abilities.
An example of this could be large, hard bones or special chew sticks that your dog cannot immediately crush. These require a longer chewing time, which not only contributes to dental hygiene, but also keeps your dog occupied and potentially reduces stress or boredom. Similarly, certain types of toys that are filled with food can help to keep your dog mentally stimulated as they have to figure out how to get to the food.
This activity has several benefits: it can strengthen the bond between you and your dog if you use interactive feeding toys, it supports good oral hygiene and can help prevent behavioral problems that arise from boredom or excess energy. However, it is important to make sure that the ingredients or toys are safe and suitable for your dog to avoid injury or health problems.